converts a file into json array with each line as the string

convert-file-to-array.sh

#!/bin/sh
# -i is in place and -e is the regular expression

# add a " to start of each line
sed -i -e 's/^/"/' input

# add a ", to end of each line
sed -i -e 's/$/",/' input


# add [ to the first line
sed -i -e '1s/^/[/' input

# $ is a Sed address that matches the last input line only
# remove comma in the last line
sed -i -e '$ s/.$//' input

# add a ] at the end of file
sed -i -e '$ s/$/]/' input